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Vishay General Semiconductor - Diodes Division SMBJ90AHE3_B/I
- Part No.:
- SMBJ90AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ90AHE3_B/I.pdf
- Description:
- 600W,90V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,862
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Product details
Overview
SMBJ90AHE3_B/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping fast-rising ESD and surge transients on power and signal lines. It features a 90 V stand-off voltage (VWM), 100 V minimum breakdown voltage (VBR), 146 V maximum clamping voltage (VC) at 4.1 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive power rail protection and industrial sensor interface circuits.
For engineers reviewing the SMBJ90AHE3_B/I datasheet, SMBJ90AHE3_B/I pinout, SMBJ90AHE3_B/I application, or SMBJ90AHE3_B/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), junction temperature range (–55 to +150 °C), and compliance with UL 497B for telecom/sensor line protection.
Technical Context
This TVS diode operates as a voltage-clamping device in reverse-biased configuration, triggering when transient voltage exceeds its breakdown threshold (VBR = 100–111 V). Its glass-passivated junction ensures stable avalanche characteristics and low incremental surge resistance under repetitive 10/1000 µs surges at 0.01% duty cycle.
Designed for surface-mount assembly on 0.2" × 0.2" copper pads, it delivers 600 W peak pulse power dissipation with clamping response time <1 ns and meets MSL Level 1 per J-STD-020 (reflow peak 260 °C). The HE3 suffix confirms RoHS-compliance and AEC-Q101 qualification for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA; defines safe DC/AC bias limit for protected line |
| VBR (min/max) | 100 V / 111 V at IT = 1 mA - guaranteed avalanche initiation window; ensures predictable turn-on across temperature and unit variation |
| VC @ IPPM | 146 V at IPPM = 4.1 A - clamped voltage during 10/1000 µs surge; determines maximum stress imposed on downstream ICs |
| PPPM | 600 W - peak transient energy handling capacity; validated per IEC 61000-4-5 Level 4 (4 kV) surge immunity requirements |
| TJ max. | +150 °C - maximum junction temperature; enables operation in under-hood automotive environments and high-power industrial enclosures |
| RθJA | 100 °C/W - thermal resistance junction-to-ambient on standard PCB pad layout; informs derating above TA = 25 °C per Fig. 2 |
| AEC-Q101 | Qualified - certified for automotive electronics per stress test requirements including HTGB, HTRB, and TCT; supports PPAP documentation |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002. Cathode indicated by band marking on cathode end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; completes conduction path during reverse transient clamp |
| Cathode | High-side transient input terminal | Connected to protected line (e.g., 12 V rail or sensor output); avalanche conduction initiates here during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 surge events up to 4 kV without degradation over 1000+ cycles |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive powertrain and body electronics; supports zero-defect manufacturing and long-term field reliability |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage (<1 µA at VWM) across –55 to +150 °C operating range |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns or baking requirements |
| UL 497B recognized (QVGQ2) | Approved for telecom and data line protection; satisfies safety isolation and flammability (UL 94 V-0) requirements |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: 12 V battery-supplied ECUs exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and LDO/regulator input to clamp transients before they reach sensitive PMICs. Use Value: Limits clamped voltage to ≤146 V during 4.1 A surge, preventing regulator latch-up and ensuring system reset integrity. |
Use Scenario: 4–20 mA current loop sensors in factory automation subject to ESD and inductive switching noise. IC Role / Device Role / Timing Role: TVS mounted across sensor output terminals to shunt fast transients before reaching analog front-end ADC inputs. Use Value: Sub-1 ns response time and 1 µA leakage at 90 V preserve signal accuracy while surviving >30 kV contact ESD per IEC 61000-4-2. |
| Telecom Line Surge Suppression | Consumer Power Adapter Input Protection |
|
Use Scenario: DSL/POE line cards interfacing with outside plant wiring vulnerable to lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping device on secondary side of isolation transformer, coordinated with GDT or MOV upstream. Use Value: UL 497B recognition and 600 W rating enable compliance with GR-1089-CORE Level 3 surge immunity (2 kV differential mode). |
Use Scenario: AC-DC adapter primary-side input stage subjected to mains-borne surges and capacitor discharge transients. IC Role / Device Role / Timing Role: Secondary-side TVS protecting rectifier output and bulk capacitor from reflected transients and ringing. Use Value: 150 °C max junction temperature and 100 °C/W RθJA allow reliable operation in compact, thermally constrained adapter housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90AHM3_B/I | Halogen-free, RoHS-compliant, AEC-Q101 qualified - identical electrical specs but different material composition | No functional difference; selected where halogen-free BOM compliance is mandated (e.g., EU automotive Tier 1) | Direct material substitution when halogen-free requirement applies; same footprint, thermal, and electrical behavior |
| SMCJ90AHE3_A/I | Larger SMC (DO-214AB) package; 1500 W PPPM rating; higher IPPM (9.2 A); same VWM/VBR/VC specs | Used where higher surge margin is required (e.g., industrial motor drives), but requires larger PCB area and higher thermal mass | Select when 600 W is insufficient; not pin-compatible due to larger SMC footprint and different pad layout |
Compared with SMBJ90AHE3_B/I, SMBJ90AHM3_B/I offers identical performance with halogen-free construction, while SMCJ90AHE3_A/I provides 2.5× higher surge power in a non-interchangeable package - choice depends strictly on material compliance needs or surge margin requirements, not electrical compatibility.
Availability
SMBJ90AHE3_B/I is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom infrastructure requiring stable component supply with AEC-Q101 traceability and RoHS compliance.
Supply support for SMBJ90AHE3_B/I includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific optimization.
The SMBJ series is part of Vishay's TRANSZORB® TVS platform, engineered for high-energy transient suppression in automotive, industrial, and communications systems where precision clamping and long-term stability are critical.
FAQ
What does the "HE3" suffix indicate in SMBJ90AHE3_B/I?
The HE3 suffix in SMBJ90AHE3_B/I denotes RoHS-compliant construction and AEC-Q101 qualification. It confirms that SMBJ90AHE3_B/I meets automotive-grade reliability standards including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - essential for under-hood and chassis-mounted applications.
Is SMBJ90AHE3_B/I bidirectional or unidirectional?
SMBJ90AHE3_B/I is a unidirectional TVS diode, as confirmed by its "A" suffix and cathode band marking. It conducts only during reverse-voltage transients - forward conduction is blocked except for brief forward surge events up to 100 A (IFSM). Bidirectional variants use "CA" suffixes (e.g., SMBJ90CA).
What is the maximum clamping voltage VC for SMBJ90AHE3_B/I, and at what current is it specified?
The maximum clamping voltage VC for SMBJ90AHE3_B/I is 146 V, measured at IPPM = 4.1 A using the standardized 10/1000 µs double-exponential surge waveform. This value defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
Can SMBJ90AHE3_B/I replace SMBJ90A-E3 in an existing design?
SMBJ90AHE3_B/I is not a direct replacement for SMBJ90A-E3 due to differences in qualification and packaging: SMBJ90AHE3_B/I is AEC-Q101 qualified and supplied in 13" tape-and-reel (I), whereas SMBJ90A-E3 is commercial-grade and typically shipped in 7" reels. Electrical specs match, but automotive validation and reel format differ.
What is the thermal resistance RθJA of SMBJ90AHE3_B/I, and how does it affect layout?
SMBJ90AHE3_B/I has a typical RθJA of 100 °C/W when mounted on 0.2" × 0.2" copper pads per Vishay's recommended layout. This means board-level thermal design must allocate sufficient copper area and minimize ambient temperature rise to keep junction temperature below +150 °C - especially critical in sealed automotive enclosures.
SMBJ90AHE3_B/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 90V
- Voltage - Breakdown (Min):
- 100V
- Voltage - Clamping (Max) @ Ipp:
- 146V
- Current - Peak Pulse (10/1000µs):
- 4.1A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ90AHE3_B/I FAQ
1.How can I place an order for SMBJ90AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ90AHE3_B/I on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SMBJ90AHE3_B/I reliable?
The price and inventory of SMBJ90AHE3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ90AHE3_B/I is usually 5 days.
3.What payment methods are accepted for SMBJ90AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ90AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ90AHE3_B/I?
SMBJ90AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ90AHE3_B/I order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SMBJ90AHE3_B/I?
For technical support, including SMBJ90AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ90AHE3_B/I requirements.
6.How does Aetrix verify that SMBJ90AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All SMBJ90AHE3_B/I products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SMBJ90AHE3_B/I meets industry standards.
7.What is the process for return or replacement of SMBJ90AHE3_B/I?
All SMBJ90AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ90AHE3_B/I, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SMBJ90AHE3_B/I part is unused and in its original packaging.
Return procedure for SMBJ90AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ90AHE3_B/I Tags
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